Sawbuck.



Patented July 24, |900.

A. G. CLARK.

S AW B U C K (Application filed May 17, 1900.i

(No Model.)

ABNER G. CLARK, OF FORT RECOVERY, OHIO.

SAWBUCK.

$41313CIFICATIONv forming part of Letters Patent No. 654,134, dated July24, 1900.

Application tiled May 17, 1900.

To LZZ whom t may concern:

Beit known that I, ABNER G. CLARK, a citizen of the United States,residing at Fort Recovery, in the county of Mercer and State of Ohio,have invented a newand useful Sawbuck, of which the following is aspecification.

My present invention relates to improvements in sawbucks; and one objectin view is to provide a buck with foot-operated clamping devices bymeans of which the wood to be sawed may be held rigid without necessityfor the application thereto f the sawyers knee.

A further object, which, perhaps, is subordinate to that mentioned, isto permit the sawye'r to stand erect while sawing by providing for theoperation of the wood-clamping devices by the application of the foot toa treadle or other actuator located in proximity to the ground.

rIo the accomplishment of these ends the invention consists in providingat each end of the sawbuck a pair of clamping-levers arranged to firmlygrip the opposite ends of the wood supported upon the buck and operatedby a treadle located directly under the wood and in comparatively-closeproximity to the base of the buck to enable the sawyer to securely clampthe wood to be sawed while standing in a nearly upright position, theclamping devices or levers being retracted by weights to release thewood when the foot isv removed from the treadle.

The invention consists, further, in the details of construction andarrangement to be hereinafter more fully described, illustrated in theaccompanying drawings, and defined in the appended claims.

In said drawings, Figure l is a perspective view of my improved sawbuck,the clampinglevers being shown in their open positions, and Fig. 2 is anend view of the subject-matter of Fig. 1, showing a log clamped betweenthe clamping-levers by the depression of the treadle.

Referring to the numerals of reference indicating corresponding parts inboth views, 1 indicates the beam of an ordinary sawbuck, and 2 and 3 theusual cross-stands, bolted at the opposite ends of the beam andconstituting downwardly-divergent supporting-legs 4 and 5 andupWardly-diverging log-guides 6 and 7, which latter form the log-restsof inclamping-levers.

serial No. 16,991. (No mdem verted-V shape. Piercing the standsimmediately above the beam area pair of alined bolts S and 9, upon eachof which beyond each stand are pivotally mounted a pair ofclamping-levers, those at one end of the buck being indicated by thenumerals and 11 and those at the opposite end by the numerals 12 and 13.'These'levers, beingpivoted upon a common stud or vpintle located at apoint intermediate of the ends of the levers, constitute their upperends a pair of divergent clamping-jaws provided upon their opposed edgeswith teeth 14, which in the normal positions of the levers are locatedbehind the contiguous log-supporting faces 15 of the logrests. Betweenthe lower ends of the clamping-levers constituting each pair isdisposed.

a flexible connector and treadle-support 16,

each of which is passed around or otherwise connected atapointintermediate of itslength to one end of a slat 17, located below thebeam 1 and constituting a treadle.

`By reference to Fig. 2 of the drawings it will be seenthat a log placedupon the buck in the ordinary manner will be rmly gripped the log torelease the latter when the foot is removed. from the treadle, and forthis purpose I employ a weight 18 for each pair of Each weight isconnected to one end of a weight-'cable 19, which passes `from thesuspended weight over a pulley 20,

connected to the uppery end of one of the clamping-levers, the oppositeend of the cable being connected to the lower extremity of the otherlever. Thus when the parts are in the position indicated in Fig. 2 ofthe drawings and the foot of the Sawyer is removed from the treadle theweights will exert a downward pull upon the upper end of one leverand anupward pull upon the opposite end of the other lever of each pair toeffect the retraction of the teeth 14 from the wood and the elevation ofthe treadle 17 to its normal position. Itis obvious, however, that if anexceedinglythin stick is retained upon the buck the Aclamping-leverswill have to approach to a nearly IOO ally connected at their upperextremities to the upper ends of the clamping-levers. These blocks hangloosely from the levers and normally assume a vertical position, asshown in 3- Fig. lof the drawings; but the arrangement of their pivotalconnection is such that they cannot swing to a position in alinementwith the levers, but are stopped in one direction, so that as the leversare swung into positions approximating the vertical the pulley-blocksextend at an angle, as shown in Fig. 2 of the drawings, for the purposeof bringing the working points aiected by the weight in a line asuflicient distance to one side of the fulcrum of the levers to insuretheir retraction.

In order to properly balance the buck, the Weights of the pairs oflevers are arranged at Opposite sides of the stands, although obviouslythis arrangement may be varied to suit the conditions of use and thedesire of the individual manufacturer.

From the foregoing it will appear that I have produced a novel sawbuckupon which the sawyer or other operator may rigidly retain the log,stick, or board by the depression of a treadle to operate the clampingdevices, the actuation of which does not necessitate the assumption of astooping posture, which is ordinarily necessary to enable the sawyer toretain the stick operated upon during the sawing operation; but whilethe present embodiment of my invention appears at this time to bepreferable I desire to reserve the right to eifect such changes,modifications, and variations of structure as may be properlycomprehended within the scope of the protection prayed.

Vhat I claim isl. A sawbuck provided with a pair of pivotedclamping-levers, a treadle arranged to move said levers into theirclamping positions, a flexible piece connecting contiguous ends of saidlevers, and the weight carried by said flexible piece to normally urgesaid levers to their retracted positions.

2. A sawbuck provided with a pair of clamping-levers having a commonfulcrum, a flexible connector extending between the lower ends ofsaidlevers, a treadle supported by said connector and designed by itsdepression to swing the levers to their clamping positions, aweight-cable connected to the lower end of one of said levers and havinga loose connection with the upper end of the other lever, and a weightcarried by said weight-cable and exerting a constant tendency toseparate the levers.

3. A sawbuck provided with a pair of clamping-levers mounted on a commonfulcrum, a,treadle operatively connected with said levers to urge themtogether, a pulleyblock extending at an angle from the upper end of oneof the levers, a pulley mounted in the outer end of said pulley-block, acable connected to the lower end of the other lever and passed over thepulley, and a weight carried by said cable and exerting a constanttendency to separate the levers.

4. A sawbuck comprising a pair of clamping-levers fulcrumed beyond eachend of the buck, a iiexible connector extending between the lower endsof each pair of levers, a treadle supported at its opposite `ends uponsaid iiexible connectors, a pulley-block pivoted to the upper end of onelever of each pair, said blocks being arranged at opposite sides of thebuck, a pulley mounted in the lower end of each pulley-block, aweight-cable connected to the lower end of the lever .associated withthe lever carrying the pulley-block, said cable being passed over theadjacent pulley, and a Weight suspended from the end of eachweight-cable, whereby the depression of the treadle eiects the closingof both pairs of clamping-levers,` each pair of which levers isretracted under the influence of its weight upon release of the treadle.

In testimony that I claim the foregoing as my own I have hereto aiiixedmy signature in the presence of two witnesses.

- ABNER G. CLARK.

Witnesses ANNIE MEDFORD, ALLIE CAMPBELL.

